[Mageia-dev] unable to mount encrypted partitions created with drakdisk

simple w8 simplew8 at gmail.com
Thu Mar 29 03:40:36 CEST 2012

2012/3/29 simple w8 <simplew8 at gmail.com>:
> 2012/3/21 David W. Hodgins <davidwhodgins at gmail.com>:
>> On Tue, 20 Mar 2012 20:57:47 -0400, simple w8 <simplew8 at gmail.com> wrote:
>>> Hi,
>>> I use sometimes to boo Windows, and if i need some file i use to mount
>>> my /home encrypted partition using FreeOTFE (or TrueCrypt) to access
>>> the files i need, but i saw today that the /home partition that was
>>> created in mageia is not possible to mount with FreeOTFE or TrueCrypt.
>>> But the /home partition created with mandriva drakdisk can be mounted
>>> with those 2 applications, so seams that Mageia drakdisk isnt doing
>>> something right.
>> That's likely a result of
>> https://bugs.mageia.org/show_bug.cgi?id=3092
>> With the default settings, cryptsetup uses cbc mode encryption,
>> which makes it much more likely that it can be cracked.
>> See http://clemens.endorphin.org/nmihde/nmihde-A4-os.pdf
>> for an explanation of how this is done.
>> In Mageia's diskdrake, the setting is overridden to use xts mode,
>> instead of cbc mode.
> Something is not right, Free-OTFE says is does support xts but its not
> being able to mount the partitions encrypted in Mageia, what can be
> the cause?
> You may see the FreeOTFE supported cypher modes here:
> http://www.freeotfe.org/docs/Main/Linux_volumes.htm

I have been looking to the supported cyphers and hashes in FreeOTFE
and i see that the cypher XTS with keysize 512 is not supported,
however supports keysizes 128,192,256 and 1024.

You have chosen thekeysize 512 thats the one is not supported under
the FreeOTFE project...
Isnt possible to change the keysize to a value that can be supported
under Windows?

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